#include "processbar.h"
#include <time.h>
#include <stdlib.h>
#include <unistd.h>

#define FILESIZE 1024*1024*1024

//模拟一种场景，表示一种下载任务
void download(callback_t cb)
{
    srand(time(NULL)^1023);
    int total = FILESIZE;
    while(total)
    {
        usleep(10000);
        int one = rand()%(1024*1024);
        total -= one;
        if(total < 0)
            total = 0;

        int download = FILESIZE - total;
        double rate = (download*1.0 / (FILESIZE)) * 100.0;
        cb(rate);
    }
}


int main()
{
    download(process);
    return 0;
}
